There's waste heat from our power plants today, but it's an extremely minor factor compared to carbon emissions. However, if we were to continue our current rat

There's waste heat from our power plants today, but it's an extremely minor factor compared to carbon emissions. However, if we were to continue our current rate of exponential energy growth on this planet, we would boil the oceans in 400 years. https://dothemath.ucsd.edu/2012/04/economist-meets-physicist/ https://dothemath.ucsd.edu/2012/04/economist-meets-physicist... On the other hand, compact fusion power would make for some great rockets, so by the time it's common it would probably make sense to move most of the growth off planet.